/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package dio.gpio;

import java.io.IOException;
import jdk.dio.DeviceManager;
import jdk.dio.gpio.GPIOPin;
import jdk.dio.gpio.GPIOPinConfig;

/**
 * @title Utility class to store pin configuration
 * @author stanislav.smirnov@oracle.com
 */
public class PinConfig {

    private final String name;
    private final GPIOPinConfig pinConfig;
    private final int direction;
    private GPIOPin myDevice;
    private final int ID;

    public PinConfig(int ID, String name, GPIOPinConfig pinConfig) {
        this.name = name;
        this.pinConfig = pinConfig;
        direction = pinConfig.getDirection();
        this.ID = ID;
    }

    public String getName() {
        return name;
    }

    public GPIOPinConfig getPinConfig() {
        return pinConfig;
    }

    public GPIOPin open() throws IOException {
        if (ID >= 0) {
            myDevice = (GPIOPin) DeviceManager.open(ID);
            return myDevice;
        }
        if (name.length() > 0) {
            myDevice = (GPIOPin) DeviceManager.open(name, GPIOPin.class);
            return myDevice;
        }
        if (pinConfig != null) {
            myDevice = (GPIOPin) DeviceManager.open(pinConfig);
            return myDevice;
        }
        return null;
    }

    public void close() throws IOException {
        if (myDevice != null) {
            myDevice.close();
        }
    }

    public int getDirection(){
        return direction;
    }
}
